Process of detinning tin scraps.



tihtt fll% PROCESS OF DETINNING TIN SCRAPS.

@SLWEE.

N0 Drawing.

T0 (1/7 'tll'lOI/i it may concern:

Be it l-znoivn that l, CARL VON DER LINDE,

a citizen of the German Empire. residing at St. Team. near Cret lth insaid Ihn )ire of e t I I (nzrnnnru have invented certain new tine usefulimprovements in Processes ot Delinhing 'lin Scraps. of which thetollouing is a specification. v

This invention relates to an lllll)l'()\'ttl process: of tletunnngtin-scraps by in uns ot I inert gr;

reduction vessel to it. lively agitation so 219 5 to obtain :1 unifmnutvof temperature 111 the tlilierent; parts of the v and eventually,

the quiclt'cr coining (all of the contents of the SZUTRQ. v i

The object in thi; invention to supply :in iin niovetl process. h) whichthe local overheating ot? the tin-scraps in overcome in an entirely tlili'erent inunner. it; \YilS tountl that the c-vei'heittin g oi the scrapsteel; place on y vfihen "the uninlerruptett introtluc gas which 1?:employed. tieiiertill" interruptellv introduction of should int belonger than fiittceu hen t l rmtetion on some portion or the mntt-ruilto he thtinnetl, llIlS not luul time to with-t; rcnniunnn' cnntents oithe vessel, then 2 new 1 ()l'll()ll of ens is sun'ilietl in it shortduration tllltl so on. l lxperience has shown that when the entireQuantity of chlonin, 1 thing: i of tut-scraps in uivulett whichnecessary for t of a oertznn qtutiit'ity into tire tipproxinnitely equalpart5 the distribution ci -the ehlorin over the entire oon- CARL VON DERLINDE. OF ST. TGNIS. NEAR QREFELD, GERMANY.

Application filed September 9. 1910 Serial No. 581.2W.

raps by chlorin current. after which the precise in? 1 againunintcrruptetl torn shorter or longer 1 Specification of Letters Patent.Patented Jan. 1 '7, .1 5H

l ot'licnllv interrupted llltl'tltlttt'iliill ot. ehlorin t can also hezulvnutngeously accomplished in 5 introduced at tlil'lerent points intothe (ltlll'lt ning' vessel. By the interruptmt introduc- 1 tion of thechlorin or its introduction zit; (lil'l'erent parts of the vessel. :1perfectly uniform nnrl equal tletinning of the scraps, with- 1 complishel.

in especially favorable Mint is ()llltlllltil with the new process whenit is; rnrrieil out in ml/32m. in thin ("use the "(hfitl which is ltilletl with the tiu-acrn ie, is first evnruutetl, i for instnnte, to antllltlLll)t'thi*lill'tl o'l' it) en]. iiiei't=tii' v-colinun. Then one uunntitj." oi. l'ctrlorin-gus is introduced into the. vessel in it short.strong current, whereby the. uniler- 1 pr urc is retl icecl in tr fewllliliilttH to szrv 50 cm, of the nieircurv-cotuinn. In the We theunder-pressure is l'ttiSet'l. gradually to l about 38 cinf-which is n F'XPltIl inilicution l of the partial completion (Jil the reaction.iljhen :1 longer intermission i.' nuule until the reaction temperature lt(t, t\|-.' g'rtuht t loiveretl to about a l) nr 50 tlrg'rrrfi (L tsecond quantity ot the chioriu is then iutro- 1 tlucetl, thetltltltil'flfltSrttlh is lt)\\'tt'("tl :zg uin to :ihoutx it) cnh ot thenterrui'v-ruhunu illltl rise ti f'tllt .hy the absorption utf thechlorin mtlorin ontinued for more than it tiX-et'l e1 eriod U l; 1 ilepenilentlv(if the (pun to the tor'uu' height. "the ame pro tit v i rloriii mhnitt'eil. 'lhiq period oft lt'lfit i it'rtlt with the ucre ivellttltutllt' llmfi mllllllltti ll y the tenihetnion i r nuziuii t olf'hlorin lure :it the interior t l the t'let'iuuing Y, J. i hut qelmu bythe runt'ciitzutioii oi. chlorin l, tree 1 on ttlltt nine vessel. r. 18ehtziinetl h the re:

nit

A t 11 l on the with in conswtuence oi' the ten-- t vapors of Htnunh'.wsure ol T not rtrtelietl ltlt't". 3 but; *urtl nuileremperuiure pres-:n'ure on the ri e zilmve the The 33' it il ohsei I at chlorin I'hi ltlt such a manner that the chlorin alternately out the use of anymechanical inc-tins, is :u:-

manner as the chlorin i9; tihsorhctl by the tin,

till

tion is com letcd )reviousl dried air is ad- P 1 I y mittcd into thedetinn ng vessel and atmospherie pressure established therein.

Having thus described my invention, I claim as new and desire to secureby Letters,

Patent:

l. The process herein described of detinning tin-scraps by means ofehlorin, which consists in dividing the quantity of chloringas requiredfor the proper detinning into a number of approximately-equal parts andintroducing these quantities at approximately equal intervals of timequickly to the material to be detinned, but in such a man- 1101' thatthe same is subjected for not longer than fifteen minutes of time to theuninterrupted action 01 the introduced gas-current.

2. The. process herein described of detinning tin-scraps by means ofchlorin, which consists in introducing chlorin-gas successively inapproximately-equal quantities alternately at different points to theinterior In testimony, that I claim the foregoing as my invention, Ihave signed'my name in presence of tWo subscrlblng Witnesses.

CARL VON DER LINDE.

Witnesses:

CARL \VoLLsmeM, OTTO HOFLER, Jr.

